DrunknMunky has a UK topic because he hates Yanks so I thought I'd start a thread with any deals I find for Xbox owners across the pond. I'll try to keep it updated so please don't flame if you try a link and the deal is no longer valid, just bring it to my attention. Most of these will come from Slickdeals.net and some will be PS3 also.
07/28/10 - Rock Band Portable Drum Kit for
10/06/2010 - Dirt 2 for $15 at Amazon
10/08/2010 - Mass Effect 2 for $18 at Amazon
10/12/2010 - Used Splinter Cell: Conviction for $15 at Gamefly
10/13/2010 - Alan Wake: Limited Edition for $60 at Amazon (thanks Slane)
10/15/2010 - Xbox 360 4GB Bundle (includes extra wireless controller, Xbox Live 12 month Gold card, and 4,000 Xbox Live points) for $250 at the Microsoft Store
10/18/2010 - Lots of used games for $10-$30 at FamilyVideo. Use code Pumpkins for free shipping.
10/21/2010 - Dead Rising for $12 at Amazon
10/28/2010 - Call of Duty Black Ops + 3 Months XBox Live Gold for $50 at Dell
11/05/2010 - Medal of Honor for $40 or 3 for $80 at Amazon
11/10/2010 - Select games for 30% off at EA Store with coupon code EAPARTNERS2010 (Madden NFL 11: $30; Army of Two: $7; Mass Effect 2: $14)
10/14/2010 - Xbox 360 4GB Kinect bundle + $40 Amazon video game credit for $300 at Amazon